18337321. RAPID ACTIVE CLEARANCE CONTROL SYSTEM OF INTER STAGE AND MID-SEALS (General Electric Company)
Contents
RAPID ACTIVE CLEARANCE CONTROL SYSTEM OF INTER STAGE AND MID-SEALS
Organization Name
Inventor(s)
Taehong Kim of Evendale OH (US)
RAPID ACTIVE CLEARANCE CONTROL SYSTEM OF INTER STAGE AND MID-SEALS
This abstract first appeared for US patent application 18337321 titled 'RAPID ACTIVE CLEARANCE CONTROL SYSTEM OF INTER STAGE AND MID-SEALS
Original Abstract Submitted
Example apparatus, systems, and methods for rapid active clearance control of inter-stage and mid-stage seals are disclosed. An example apparatus to control clearance for a turbine engine comprises a case surrounding at least part of the turbine engine and defining an opening therethrough; a nozzle, the nozzle including a reference pressure sensor and a static pressure sensor on a tip of the nozzle; an actuator including a multilayer stack of material, a rod coupled to the first actuator and coupled to the nozzle through the opening in the case, the rod to move the nozzle based on contraction or expansion of the multilayer stack of material; and a controller to calculate and set the clearance between the rotor and the nozzle by supplying an electrical current to the multilayer stack to cause the multilayer stack to at least one of expand or contract.
